The operator's public keys reach the node as the file operator-keys, fed by the node-engine's setting operator-signers (ADR 0539 clause 3)

module.json

@@ -14,6 +14,13 @@
       }
     ]
   },
+  "config": {
+    "operator-signers": {
+      "type": "string",
+      "description": "The operator's public keys, ed25519 in base64, one a line: the node applies a composition made by hand only when one of these signed it (ADR 0539 clause 3). Public keys, no secret. Empty trusts no operator key.",
+      "default": ""
+    }
+  },
   "resources": [
     {
       "id": "launcher",
@@ -27,6 +34,13 @@
       "type": "archive",
       "artifact": "host-arch",
       "path": "/usr/lib/nox-mesh-host/versions/${version}"
+    },
+    {
+      "id": "operator-keys",
+      "type": "file",
+      "path": "/var/lib/mesh-host/operator-keys",
+      "mode": "0644",
+      "content": "${config:operator-signers}\n"
     }
   ]
 }